All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - 2TS (Matched Bearing Assembly) > Tapered Roller Bearings - 2TS-DM (Matched Bearing Assembly, Direct Mount) > Part Number 25580 - 25520 (Y4S-25520)  

Part Number 25580 - 25520 (Y4S-25520), Tapered Roller Bearings - 2TS-DM (Matched Bearing Assembly, Direct Mount)

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Tapered Roller Bearings - 2TS-DM (Matched Bearing Assembly, Direct Mount)




Specifications  · Dimensions  · Abutment and Fillet Dimensions  · Basic Load Ratings  · Factors

Specifications

Cone Part Number
25580

Cup Part Number
25520

Related Assembly Number(s)
25580-90116

Outer Spacer Part Number
Y4S-25520

Design Unit
Inch


Dimensions

d - Bore
1 3/4 in
44.45 mm

D - Cup Outer Diameter
3.2650 in
82.931 mm

T - Width
1.875 in
47.625 mm

B - Width
2 in
50.8 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.02 in
0.4 mm

r - Cup Backface "To Clear" Radius2
0.030 in
0.76 mm

db - Cone Backface Backing Diameter
2.24 in
57 mm

Da - Cup Frontface Backing Diameter
3.05 in
77.00 mm
1 These maximum fillet radii will be cleared by the bearing corners.
2 These maximum fillet radii will be cleared by the bearing corners.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
5270 lbf
23500 N

C1 - Dynamic Radial Rating (1 million revolutions)2
35400 lbf
158000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
3020 lbf
13500 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)4
9180 lbf
40900 N
1 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
2 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
3 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.
4 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.


Factors

K - Factor1
1.74

e - ISO Factor2
0.33

Y1 - ISO Factor3
2.02

Y2 - ISO Factor4
3
1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
2 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
4 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.


 MORE IMAGES 

·  timken-2TS-DM-24-OD-pin-cage-cutaway-angle-view

·  timken-2TS-DM-24-OD-pin-cage-left-angle-view

·  Timken TRB 2TS-DM



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